Rihanna Fashion

Rihanna and Gwyneth Paltrow. You don't get much more opposite than that when it comes to fashion, but they're both worthy contenders in this Fashion Face-Off.

At least night's MET Institute Costume Gala, the fashion icons looked every bit the part, although with dramatically different styles, as you would probably expect.

Previously, we matched up Taylor Swift and Blake Lively. Now, decide the winner of a couture clash featuring the "S&M" singer and an award-winning actress:

Rihanna poses for Vogue in a Little Mermaid-esque cover shoot this month. The setting and a fashion statement both conjure up images of a Disney heroine.

The ocean. The tight, translucent gown, innocent and yet revealing. Most notably, the flaming red hair, accented with a few waves. The parallels are endless.

Okay, they pretty much end there. Still, who does mermaid fashion right? Can RiRi's sense of style overcome Ariel's half human/half fish advantage? Vote:

Julianne Hough and Rihanna represented different styles - of music and fashion - at the Grammy Awards last night. But which beauty was the best dressed?

The country singer and ex-Dancing With the Stars cast member showed her true colors ... all of them! Not everyone could pull that dress off, but JH does.

Before performing with Eminem, Rihanna took to the red carpet in a nude gown wrapped in rings of flowers ... and somehow it works because it's Rihanna.

Which star wins this Grammy Awards Fashion Face-Off? Vote!

Chart-topping friends Katy Perry and Rihanna both performed at Sunday's American Music Awards. Who will perform better in a test of style supremacy?

Katy looked adorable as ever on the red carpet, so much so that we can't help wonder if that dress may have helped salvage this rendition of "Firework."

Meanwhile, Rihanna's performance to open the show was a good one, but does her latest style experiment measure up? Vote on the fashion champ below:

Who looked better?

When it comes to setting, not just following fashion trends, Blake Lively, Rihanna and Madonna all know a thing or two about a thing or two. But who will prevail in this fashion face-off and who'll get the boot (sort of literally)?

The Queen of Pop and the Gossip Girl star both wore Stella McCartney thigh-highs out recently, but it was the "Only Girl in the World" singer who actually wore them first (last fall). Who do they look best on? You tell us!

Who rocked the boots best?

Rihanna and Katy Perry may be good friends, but friends occasionally fight. Or are pitted against each other in red carpet style showdowns, at least!

At the MTV Europe Music Awards Sunday night, the music stars showcased their unique styles as only they can, and we have to say, pulled it off well.

Rihanna rocked with Bon Jovi at the event, while Katy made her first public debut as Mrs. Russell Brand. Whose look do you prefer? Vote below!

[Photos: Splash News]

Who looked better on the red carpet?

Rihanna makes almost as many headlines with her fashion as she does with her music. Okay, maybe that's a stretch, but her style is pretty noteworthy!

Never one to shy away from bold colors, the star goes went for a vibrant look - right down to the turquoise shoes! - as she left New York's MTV studios.

Then, she was blooming again in a longer, floral dress at the signing of her new coffee table book (called Rihanna) at a Barnes & Noble. Which is better?

What's Rihanna's best look?

Rihanna and Jennifer Garner are not two celebs you often associate with the similar fashion sense ... or each other, period. But we're THG. We break down barriers.

The singer strutted out of her N.Y.C. hotel rocking Stella McCartney's sheer-topped dress, while the actress wore the very same item at the Toronto Film Festival.

The question is who wore it best? Vote below and decide!

Which star rocked this dress best?

If it weren't followed by the likes of Lady Gaga's meat dress, Rihanna's hippie-style getup at Sunday's MTV Video Music Awards might have garnered more attention.

Seriously, what is she going for here? Yikes. She was pretty awesome performing alongisde Eminem, though, so she shined where it counted most. As for Ciara?

We expect she's the odds-on favorite in this style showdown. That black dress is straight love, sex and magic. Whose VMA fashion do you like better? Vote:

Who looked better at the MTV Video Music Awards?

A style showdown between Whitney Port and Rihanna is clash of fashion titans, albeit very different ones. We love these two. But there can be only one winner.

Amazingly, both The City star and fashion designer and the pop star manage to make their looks work well with wildly printed, black and white harem pants.

MC Hammer would be proud ... if he could afford an Internet connection and read this. Just kidding. Probably. Dude was in serious financial trouble for a time.

Anyway, who looks better? Check out the Whitney and Rihanna pics and vote!

Which star is the best dressed?